Bearing and seal assembly for motor mixer
US4850723A · kind A · utility
Inventor
Key dates
| Filing date | Feb 3, 1989 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Feb 3, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2035/3513
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A bearing and seal assembly 10 for a mortar mixer having attached to mortar mixer frame 36 a stationary cylindrical housing 14 for rotatably receiving and supporting a hollow cylindrical drum support shaft 11 attached to mortar drum end wall 18. The stationary frame 14 and drum support shaft 11 defining cylindrical cavity 48 between them into which lubricating grease can be injected through grease fitting 25 in stationary housing 14. The drum support shaft 11 further having ball bearing assembly 49 contained therein for rotatably supporting paddle shaft 12 which is positioned coaxial with drum support shaft 11. The drum support shaft 11 further having a spring biased plurality of grease seals 30 sealing the cavity within drum support shaft 11 around paddle shaft 12 between ball bearing assembly 49 and grease seals 30. Hole 21 is provided in drum support shaft 11 for injection of grease from cylindrical cavity 48 between drum support shaft 11 and stationary housing 14 into the drum support shaft cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.